In an online description, Savills Auctions said the potential property offered "local amenities along the length of Northcote Road, including its popular street market".

The site is also close to Clapham and Wandsworth Commons.

Chris Coleman Smith, director of Savills Auctions, said he was only a "little bit" surprised by the amount the alleyway sold for as it had "attracted a lot of interest".

He told the Standard: "This is a classic example of a property finding its value in the auction room. The area around the property is red hot. We have sold all sorts of stuff over the years but this is maybe one of the most unique lots."

The sale highlights an ongoing trend for narrow homes in the capital as London's housing crisis continues.